Introducció
This manual provides essential information for setting up, operating, and maintaining your GMKtec Nucbox K4 Mini PC. Please read these instructions carefully before use to ensure optimal performance and longevity of your device.
Contingut del paquet
Verifiqueu que tots els elements que s'enumeren a continuació s'inclouen al vostre paquet:
- Nucbox K4 Mini PC
- Cable i adaptador d'alimentació
- Manual d'usuari (aquest document)
- Cable HDMI
- Muntatge VESA amb cargols
- Targeta de garantia

Image: Contents of the GMKtec Nucbox K4 Mini PC package.
Producte acabatview
Ports del panell frontal
El panell frontal proporciona un accés convenient als ports que s'utilitzen amb més freqüència:
- Botó d'encesa: Per encendre/apagar el dispositiu.
- Conector d'àudio de 3.5 mm: Per a auriculars o altaveus externs.
- Type-C USB 4.0 Port: Supports data transfer up to 40Gbps.
- Ports USB 3.2 (x2): Per connectar dispositius USB.
- Restableix el forat: Per reiniciar el sistema.

Image: Front panel ports and their functions.
Ports del panell posterior
The rear panel houses essential connectivity options:
- DC IN (19V/6.32A): Entrada d'alimentació per al dispositiu.
- Ports HDMI 2.0 (x2): Supports 4K resolution at 60Hz.
- USB 3.2 Port (Gen 2*1): Per connectar dispositius USB.
- Port USB 2.0: Per connectar dispositius USB.
- Giga LAN (RJ45 2.5G): Per a una connexió de xarxa per cable d'alta velocitat.
- Ranura de bloqueig Kensington: Per a la seguretat física.

Image: Rear panel ports and their functions.
Components interns
The Nucbox K4 features a powerful AMD Ryzen 9 7940HS processor, 32GB DDR5 RAM, and a 1TB PCIe 4.0 SSD. It also includes a MediaTek Wi-Fi 6 module for wireless connectivity.
Video: An unboxing video of the GMKtec Nucbox K4 Mini PC, showing the external ports and internal components like RAM and SSD.

Imatge: Detallada view of the AMD Ryzen 9 7940HS processor specifications and performance.

Image: Information on the Super Speed Wi-Fi 6 and Bluetooth 5.2 capabilities.

Image: Details about the 2.5G High Speed Ethernet port.

Image: Explanation of the efficient cooling system.
Configuració
- Connecteu els perifèrics: Connect your monitor(s) to the HDMI ports or the USB-C 4.0 port (for DisplayPort functionality). Connect your keyboard and mouse to the available USB ports.
- Connectar l'alimentació: Plug the power adapter into the DC IN port on the rear panel, then connect it to a power outlet.
- Encès: Press the power button on the front panel. The system will boot up.
- Configuració inicial: Seguiu les instruccions que apareixen a la pantalla per completar la configuració inicial del Windows 11 Pro, incloent-hi l'idioma, la regió, la connexió de xarxa i la creació del compte d'usuari.
Instruccions de funcionament
Funcionament bàsic
Your Nucbox K4 Mini PC comes pre-installed with Windows 11 Pro. Navigate the operating system using your connected keyboard and mouse. For detailed instructions on Windows 11, refer to Microsoft's official documentation.
Multi-Display Setup
The Mini PC supports triple-screen display at 4K@60Hz via its two HDMI 2.0 ports and one USB-C 4.0 port (which supports DisplayPort 1.4 for 8K@165Hz). Connect your monitors and configure display settings within Windows 11 (Right-click desktop > Display settings).

Image: Triple-screen display setup with the Nucbox K4 Mini PC.
Rendiment de joc
Equipped with AMD Radeon 780M graphics, the Nucbox K4 is capable of running various games. Performance may vary based on game settings and resolution. For optimal gaming, ensure your graphics drivers are up to date.
Video: Demonstrates the gaming performance of the Nucbox K4 Mini PC with various AAA games.

Image: Gaming performance benchmarks for popular titles.
Manteniment
Upgrading RAM and SSD
The Nucbox K4 features a quick disassembly design, allowing for tool-free upgrades of RAM and SSD. The device supports up to 64GB DDR5 dual-channel SODIMM RAM and up to 2TB PCIe 4.0 M.2 2280 SSD.
- Apagar: Assegureu-vos que el Mini PC estigui completament apagat i desconnectat de la font d'alimentació.
- Traieu la coberta superior: Gently slide or lift the top cover to access the internal components.
- Install/Replace Components: Carefully install or replace the SODIMM RAM modules or M.2 SSD. Refer to the specific component's installation guide if needed.
- Cobertura segura: Torneu a fixar la coberta superior de manera segura.

Image: Quick disassembly for RAM and SSD upgrades.

Image: Performance benefits of PCIe 4.0 SSD and DDR5 RAM.
Neteja
Regularly clean the exterior of the Mini PC with a soft, dry cloth. Ensure vents are free from dust accumulation to maintain optimal airflow and cooling performance. Do not use liquid cleaners directly on the device.
Resolució de problemes
- Sense energia:
- Check if the power adapter is securely connected to both the Mini PC and the power outlet.
- Assegureu-vos que la presa de corrent funcioni.
- Sense pantalla:
- Verify that the HDMI or USB-C cables are securely connected to both the Mini PC and the monitor.
- Assegureu-vos que el monitor estigui encès i configurat a la font d'entrada correcta.
- Try a different cable or monitor if possible.
- Rendiment lent:
- Tanca les aplicacions innecessàries que s'executen en segon pla.
- Check for system updates and driver updates.
- Ensure adequate ventilation and clean dust from vents.
- Problemes de connectivitat de xarxa:
- Per a la connexió per cable, comproveu l'estat del cable Ethernet i del router.
- For Wi-Fi, ensure the Wi-Fi adapter is enabled and connected to the correct network. Restart your router if necessary.
Especificacions
| Característica | Detall |
|---|---|
| Processador | AMD Ryzen 9 7940HS (5.2 GHz) |
| RAM | 32 GB DDR5 5600 MHz (Expandable up to 64GB) |
| Emmagatzematge | 1 TB PCIe 4.0 M.2 2280 SSD (Expandable up to 2TB) |
| Gràfics | AMD Radeon 780M |
| Sistema operatiu | Windows 11 Pro |
| Connectivitat | Wi-Fi 6, Bluetooth 5.2, 2.5Gbps LAN |
| Sortida de vídeo | 2x HDMI 2.0 (4K@60Hz), 1x USB-C 4.0 (8K@165Hz) |
| Ports USB | 1x USB-C 4.0, 3x USB 3.2, 1x USB 2.0 |
| Àudio | 3.5mm Àudio Jack |
| Dimensions | Aprox. 7.4 x 7.28 x 4.02 polzades (paquet) |
| Pes | Aprox. 3.25 lliures |
Garantia i suport
GMKtec provides comprehensive support for your Nucbox K4 Mini PC. For any inquiries or technical assistance, please refer to the following options:
- Suport d'Amazon: Log in to your Amazon account, navigate to "Your Orders," and select "Ask Product Question" for direct assistance.
- Suport postvenda: Contact the GMKtec After-Sales Team via email at support@gmktec.com per a atenció al client 24 hores al dia, 7 dies a la setmana.

Image: GMKtec Warranty and Support information.





